FINANCIAL INSTRUMENTS (Details)	1 Months Ended	12 Months Ended
	Jun. 30, 2015 USD ($) term	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Schedule of Financial Instruments [Line Items]
Balance owed to counterparty		$ 32,000	$ 6,769,000
Carrying amount of long-term debt		645,082,000	611,991,000
Debt issuance costs		$ 6,000,000	6,600,000
Minimum
Schedule of Financial Instruments [Line Items]
Term of loans		5 years
Maximum
Schedule of Financial Instruments [Line Items]
Term of loans		10 years
Atlantic City Note Receivable
Schedule of Financial Instruments [Line Items]
Amount of advance to not-for profit organization	$ 10,000,000
Interest rate of note	1.00%
Term of loans	6 months
Optional additional term | term	2
Term of extension option	3 months
Unnamed counterparty
Schedule of Financial Instruments [Line Items]
Balance owed to counterparty		$ 3,600,000	6,700,000
Level 1
Schedule of Financial Instruments [Line Items]
Restricted investments held in escrow		32,200	32,200
Level 2
Schedule of Financial Instruments [Line Items]
Estimated fair value of long-term debt		673,100,000	657,400,000
Carrying amount of long-term debt		639,100,000	605,400,000
Level 2 | Financing receivable
Schedule of Financial Instruments [Line Items]
Carrying amount of loans		9,500,000	12,900,000
Imputed interest on long-term receivables		$ 900,000	$ 1,300,000